Posted at 05:00 AM ET, 07/04/2012

D.C. area forecast: A scorching 4th with a risk of storms for some

* Heat advisory noon to 9 p.m. - heat indices to 100-105 *


Today: Hot and humid. 30-40% chance of p.m. storms. Upper 90s. | Tonight: 30-40% chance of evening storms. 70s to near 80. | Tomorrow: Mostly sunny and humid. Slight chance of p.m. storm. Upper 90s to near 100. | A Look Ahead | Get Express Forecast by E-mail


A somewhat subjective rating of the day’s weather, on a scale of 0 to 10

What have we done to deserve this double whammy of derecho and extended heat? Still, a holiday trumps a work day any day. Get the Digit on Twitter | Discuss on Facebook


Today's high heat and humidity along with a chance of thunderstorms isn’t terribly unusual for July 4th in and around the nation’s capital. But what is far from usual is the surrounding circumstances of continued derecho recovery and a number of cancelled fireworks displays. The big one is still set to go off on the National Mall as long as storms don’t interfere. No matter where you are or what you’re doing today, please do stay safe in the heat, and if thunder roars, head indoors.

Temperatures: Latest D.C. area temperature map. See interactive map on our Weather Wall.

Today (Fourth of July): We’ve got a slight risk of remnant morning showers or a rumble. After that, it’s a new day, a holiday even, but with the same old story of heat, a lot of humidity and 30-40% chance of afternoon/evening thunderstorms. Not everyone will see their late-day July 4th activities interrrupted by a storm, but it’s a scenario to certainly keep in mind. And while storm chances may not be overwhelming, any storms that do develop could be intense with severe winds and large hail. Before that, highs should reach the upper 90s under partly to mostly sunny skies and the heat index topping out near 100-105. Confidence: Medium

What is the Storm Threat Level?

Tonight: Evening thunderstorm chances remain around 30-40% before diminishing overnight. There’s little relief from the heat as lows hold up in the 70s to near 80 under partly cloudy skies. Confidence: Medium

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend...

Tomorrow (Thursday): The humidity holds its ground and the heat is even a bit more potent on Thursday. Highs shoot up to the upper 90s or near 100 and that heat index makes a run at 105 or a touch higher. Mostly sunny skies are of no help to those trying to hide from the heat. Just a slight chance of an afternoon storm. Confidence: Medium-High

Tomorrow night: Nothin’ new here.... just alight chance of an evening storm. Otherwise it’s partly cloudy and very warm once again as lows only get down to the 70s to near 80. Confidence: Medium-High


The forecasst for Friday, Saturday and Sunday is mainly a cut-and-paste one. The hot and humid pattern remains entrenched with partly to mostly sunny skies, highs in the mid-to-upper 90s, afternoon heat indices topping 100, and nighttime lows in the 70s to near 80. Probably nothing more than an isolated storm Friday and Saturday, with a little better chance on Sunday. Confidence: Medium

By  |  05:00 AM ET, 07/04/2012

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